To confirm Ohm's law, the student measures the voltage versus current for the conductor sample. The student changes the current through the conductor from 0 to 2 mA every 20 seconds increasing the current by 0.2 mA and measures the corresponding voltage value. The results of these measurements are presented in the table below. Find the correlation coefficients for the obtained data and make your conclusions about thestatistical relationships between current and voltage and between time and voltage. Can we conclude that correlations imply causation for these pairs of variables?
A)Both correlation coefficients are very close to 1, so the relationships are very strong.Both of these relationships imply causation.
B)Both correlation coefficients are very close to 1, so the relationships are very strong.The change of current causes the change of voltage, but the change of time without changing current does not cause the change of voltage.
C)Both correlation coefficients are very close to 1, so the relationships are weak.The change of current can cause the change of voltage, but the change of time without changing current does not cause the change of voltage.
D)Both correlation coefficients are very close to 1, so the relationships are weak.Both current and time do not imply on the voltage of the conductor sample.

Question

To confirm Ohm's law, the student measures the voltage versus current for the conductor sample. The student changes the current through the conductor from 0 to 2 mA every 20 seconds increasing the current by 0.2 mA and measures the corresponding voltage value. The results of these measurements are presented in the table below.  Find the correlation coefficients for the obtained data and make your conclusions about thestatistical relationships between current and voltage and between time and voltage. Can we conclude that correlations imply causation for these pairs of variables?
A)Both correlation coefficients are very close to 1, so the relationships are very strong.Both of these relationships imply causation. 
B)Both correlation coefficients are very close to 1, so the relationships are very strong.The change of current causes the change of voltage, but the change of time without changing current does not cause the change of voltage. 
C)Both correlation coefficients are very close to 1, so the relationships are weak.The change of current can cause the change of voltage, but the change of time without changing current does not cause the change of voltage. 
D)Both correlation coefficients are very close to 1, so the relationships are weak.Both current and time do not imply on the voltage of the conductor sample.

Quizplus · Accepted Answer

The Answer of To confirm Ohm's law, the student measures the voltage versus current for the conductor sample. The student changes the current through the conductor from 0 to 2 mA every 20 seconds increasing the current by 0.2 mA and measures the corresponding voltage value. The results of these measurements are presented in the table below.  Find the correlation coefficients for the obtained data and make your conclusions about thestatistical relationships between current and voltage and between time and voltage. Can we conclude that correlations imply causation for these pairs of variables?
A)Both correlation coefficients are very close to 1, so the relationships are very strong.Both of these relationships imply causation. 
B)Both correlation coefficients are very close to 1, so the relationships are very strong.The change of current causes the change of voltage, but the change of time without changing current does not cause the change of voltage. 
C)Both correlation coefficients are very close to 1, so the relationships are weak.The change of current can cause the change of voltage, but the change of time without changing current does not cause the change of voltage. 
D)Both correlation coefficients are very close to 1, so the relationships are weak.Both current and time do not imply on the voltage of the conductor sample.

To Confirm Ohm's Law, the Student Measures the Voltage Versus